HELP with Froyo 2.2 OTA update, my screen froze!!

This is a discussion on HELP with Froyo 2.2 OTA update, my screen froze!! within the Nexus One forums, part of the Google Phones category; Here is what happened:
I am using a stock nexus one, unrooted, and I previously manually updated to FRF50. When FRF 72 came out, i ...

HELP with Froyo 2.2 OTA update, my screen froze!!

Here is what happened:
I am using a stock nexus one, unrooted, and I previously manually updated to FRF50. When FRF 72 came out, i tried to manually update, but when followed the steps of manual installation, the screen will say "recovery image not found" and then the update process would take forever and froze on the "X" screen.
I thought i wasn't doing it right, so I waited for the OTA update.
The OTA update came this morning, and I tried to update, but the same thing happened: It frozed on the "X" screen!! I waited for almost two hours, yet nothing happened.
I had to take the battery out and restart it, good thing my phone wasn't bricked!

Help!! Does anyone know what is wrong with my N1? Howcome I couldn't update? Does it have anything to do with the error message "recovery image not found"? If yes, what should I do?
Please kindly provide detail instructions, since I am not very familiar with what to do.

Here is more info about my current build:
build number FRF 50
Kernel version 2.6,32,9-27220-g328f560
android-build@apa26#1
baseband version 32.36.00.28U_4.06.00.12_7

Yes, I made sure i named it right and put it in the root of my SD card.
However this morning what I tried to install was the OTA update!
It asked if i want to install it and I selected yes, and that's all.
What do you think is wrong?

My error message appeared right after step 3. It would briefly say that the "recovery image not found" and then would load into the big "X" sign. Then my screen was frozen there. Never saw the 3 android robots on skatboards...

I just shut down my N1 and went into fastboot screen just fine. Make sure you press-and-hold the trackball the entire time. I then pressed and released the power button, while still pressing down the trackball.

You should see a screen like this (although mine has different lines of text):

My error message appeared right after step 3. It would briefly say that the "recovery image not found" and then would load into the big "X" sign. Then my screen was frozen there. Never saw the 3 android robots on skatboards...

Try just naming it update with no. Zip that's what I did and it work fine.

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